Elements of each dust system are an air suction system, a filter, a silo, or other tank, and automatics with control sensors and safety sensors.

The dust suction system is made up of fans and piping which it flows polluted air which is passing through the filter. Depending on the process, the filtered dust is transported to the silo by transport pipelines and the purified air can be returned to the production hall again. Picture 1. shows the main parts of the dust extraction system and picture 2. shows installed dust extraction system.

The choice of a filter device depends solely on the load on the system and the type of dust (abrasive, non-abrasive, explosive, etc.). The loading of the system depends on the amount of dust and the content of the smallest particles in the extracted material. The greater the total dust content and / or the proportion of finer particles, the greater the load.

Shaking mode is also selected depending on the system load and dust properties. Vibrating shaking is the simplest but also the least effective. The most effective shaking of the bags is by compressed air, which is programmed, in large quantities, into a clean interior of the bag in a very short time and, when passing through it, strongly escapes dust particles accumulated on the outer surface of the bag. The same principle applies to blower fan shaking, only to be less effective. If the dust that is filtered is very abrasive, the pressure system must be applied to ensure durability of the equipment. In these systems, the entire transport of material from the point of origin to the filter is under pressure, and the fan unit is located behind the filter and passes through the already filtered, dust-free air. This protects the fan and prevents the pipeline from coming in contact with the abrasive dust except the knees.

Negative pressure systems are often applied even where concentrations of explosive gas or dust mixtures are possible. Characteristic of underpressure systems is that the filter must have a design resistant to the created underpressure and, as a rule, have one of the bag shake systems installed.